This commit fixes an issue we had where the bolding on the Ticket Number and Subject columns of advanced searches showed the opposite of what they should have. We instead want them to be bold if the Tickets are Unanswered.

- Let validate_actions pass if we are trying to disable/archive a Help Topic so that the filter flag can be set.
- Make sure we do not throw validation errors when deleting a filter action. Just delete it.

If a Help Topic is disabled or archived and it is also selected as the Help Topic for an Email, make sure we do not remove that Help Topic from the Email. Instead, if that email receives a Ticket, we should just assign the ticket to the Default Help Topic. If there is no Default Help Topic, the Ticket will not have a Help Topic at all.

This addresses a careless copy/paste mistake made with 4496

This addresses an issue introduced with 4426 that references an undefined
class.

This commit addresses a case where a large thread entry body (emailed) is
stored as a file, when fetching it we have to make sure we're only fetching
plain text/html and not attachment files.

This is necessary because ticket filters or API can set an invalid help
topic id. Either deleted or no longer active.

This addresses an issue where personal queues are duplicated in the main
queue sub-list.

This commit fixes an issue where we were not emailing attachments for initial responses when creating a Ticket.

This commit fixes an issue we had with adding a Filter Action to Send an Email. We had an option at the top for 'Default System Email', however, it did not have the Email ID or address for the system email and would throw an error if chosen. Now, we just retrieve the emails with their IDs and values with the Default System Email being the initial value selected in the list of options.

This commit further corrects issues where emails were being sent out with names being improperly formatted if the name format is set as 'Last, First' or if it has special characters.

This addresses an issue introduced with 4124 where searching for a Selection
Field with the criteria "does not have a value" throws an `implode()`
warning.

This improves accessibility by adding screen readable labels to ticket
actions that don’t already have them.

This commit stores internal notes if an Agent includes one while creating a Thread Referral.

This addresses issue 4473 where users creating a ticket with the Help Topic
preselected shows a validation error for the Issue Summary field. This is
due to the new `getFormName()` function that creates new field form names
based on the user’s/agent’s session. When the Help Topic is preselected,
`_form` is not set for each field so the hashed name of the fields before
ticket submit is different than after ticket submit.

This addresses an issue where `$_SESSION[':form-data']` files are not
including the new filenames.

This commit fixes the way we validate filter actions before saving a filter. Now, the code will accurately validate the action without needing a filter_id first while making sure all validations stay withing the validate_actions function.

This addresses an issue where images in email signatures containing a
`data-cid` attribute will either crash the ticket page or not show the image
in the signature.

This addresses issue 4470 where Users creating tickets via Client Portal and
failing to fill out a required field makes disabled fields by Help Topic
appear on the page. When the disabled fields appear they allow Users to
populate and save data that they were not meant to submit.

This addresses an issue where people who do not have a phone field on the
contact information form go to search for a User in the User Directory and
the system crashes. This is due to the search query that always contains the
phone field variable. This only adds the phone variable to the search query
if the field actually exists.

This will be useful when converting content on the fly on write or read -
allowing for support for output filter for file storage backend.

Allow ticket assignee to see tasks associated with the ticket.

This addresses an issue where `SetAutoFont()` was making the Thai PDFs
break. This adds the `AUTOFONT_RTL` flag to only autodetect RTL languages
and nothing else.

This addresses an issue where creating an advanced search with selection
field "does not have a value" throws a fatal error. This was due to an
improperly named search method "notset".

This commit fixes an issue where the ORM was trying to get invalid Staff fields (which we actually store in the config table), therefore throwing an error.

This adds functionality to clean expired password reset tokens on cron runs.

This addresses an issue where FileUploadFields on the ticket header is not
displaying all attachments in the field.

This adds a Signal to clean Agent and User sessions upon setting/resetting
their password. If an Agent/User resets their own password and has multiple
sessions open it will log them out of every session except the one they’re
on.

This commit addresses the root cause of an issue commit 96892beb (now
        reverted) attempted to solve - by providing consistency between
getFiles and getAttachments

This addresses an issue where row conditions are working in the preview but
not in the actual ticket queue. This updates the `getQueue()` function to
lookup the CustomQueue by `queue_id` if there is no CustomQueue object found
in the QueueColumn.

This addresses issue 4449 where using an Arabic language pack and trying to
print a ticket returns a PDF with either squares for text or no text at all.

This addresses an issue where searching for a Task by title returns all
Tasks in the search. This is due to the visibility filtering methods used to
filter tickets by staff's visibility.